Comment by ElderLoki

Upon speaking to one of the NPC's above, you will receive Mysterious Note and the quest to deliver it to Wrathion who can be found at the tavern in The Veiled Stair.

Wrathion will provide you with A Legend in the Making, and invite you to share a drink with him. Speak with Wrathion, who will then enter a short cinematic explaining the importance of your assistance.

When the cinematic has ended, you will be given two quests which you will need to complete to continue.

Stage 2: First Steps

Trial of the Black PrinceThis quest requires you to obtain honored reputation with The Black Prince. A new faction will appear in your reputation tab, and reputation can be earned by killing Mogu/Matid enemies in the Vale, Townlong, or the Dread Wastes.

Note: If you do not wish to sit and farm reputation, it can easily be obtained while killing enemies for your Golden Lotus and Klaaxi dailies.Rogues ONLY Note: If you have completed Patricide, you do not have to do this quest.

The Strength of One's FoesThis quest will take significantly more time and dedication. To complete this quest you must first obtain: -10x Sigil of Power-10x Sigil of WisdomThese sigils will drop from bosses located in Mogu'shan Vaults, the Heart of Fear, and Terrace of Endless Spring raids.

Note: As of the time of writing, these sigils do in fact drop in LFR and currently do not drop more than one per boss.

Stage 3: Yes, This Will Do Nicely!After completing both The Strength of One's Foes and Trial of the Black Prince, you will receive the quest Fear Itself from Wrathion.